Luke Robinson’s epic trek is almost over—and friends and supporters can join him and his dogs for their final mile into Boston. When you think about it, 5,280 feet is the least you can do if you’re nearby, after all, Robinson and his two Great Pyrenees, Hudson and Murphy, have logged 2,400 miles to get this far. The journey began two years ago, when Robinson left Austin with his two, big white furballs on a march to raise awareness about and money for research to eradicate metastatic bone cancer, to which his beloved dog Malcolm (also a Great Pyrenees) succumbed in 2006. A memorial service to honor loved ones touched by cancer will precede the walk (9:30 a.m., Kelleher Rose Garden Back Bay Fens) and a Puppy Up! Festival and Gala will follow in the afternoon and evening. Find complete Saturday details here. And read the blog.